#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>

int strlen(char* arr)
{
	if (*arr == '\0')
	{
		return 0;
	}
	else
	{
		return 1 + strlen(arr + 1);
	}
}

int main()
{
	char arr[10] = "asdfgh";
	int sum = strlen(arr);
	printf("%d\n", sum);
	return 0;
}